diff options
Diffstat (limited to 'arch/ppc/platforms/4xx/ash.c')
| -rw-r--r-- | arch/ppc/platforms/4xx/ash.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/arch/ppc/platforms/4xx/ash.c b/arch/ppc/platforms/4xx/ash.c new file mode 100644 index 00000000000..ce291179371 --- /dev/null +++ b/arch/ppc/platforms/4xx/ash.c @@ -0,0 +1,250 @@ +/* + * arch/ppc/platforms/4xx/ash.c + * + * Support for the IBM NP405H ash eval board + * + * Author: Armin Kuster <akuster@mvista.com> + * + * 2001-2002 (c) MontaVista, Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ +#include <linux/config.h> +#include <linux/init.h> +#include <linux/pagemap.h> +#include <linux/pci.h> + +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <asm/io.h> +#include <asm/ocp.h> +#include <asm/ibm_ocp_pci.h> +#include <asm/todc.h> + +#ifdef DEBUG +#define DBG(x...) printk(x) +#else +#define DBG(x...) +#endif + +void *ash_rtc_base; + +/* Some IRQs unique to Walnut. + * Used by the generic 405 PCI setup functions in ppc4xx_pci.c + */ +int __init +ppc405_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) +{ + static char pci_irq_table[][4] = + /* + * PCI IDSEL/INTPIN->INTLINE + * A B C D + */ + { + {24, 24, 24, 24}, /* IDSEL 1 - PCI slot 1 */ + {25, 25, 25, 25}, /* IDSEL 2 - PCI slot 2 */ + {26, 26, 26, 26}, /* IDSEL 3 - PCI slot 3 */ + {27, 27, 27, 27}, /* IDSEL 4 - PCI slot 4 */ + }; + + const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; + return PCI_IRQ_TABLE_LOOKUP; +} + +void __init +ash_setup_arch(void) +{ + ppc4xx_setup_arch(); + + ibm_ocp_set_emac(0, 3); + +#ifdef CONFIG_DEBUG_BRINGUP + int i; + printk("\n"); + printk("machine\t: %s\n", PPC4xx_MACHINE_NAME); + printk("\n"); + printk("bi_s_version\t %s\n", bip->bi_s_version); + printk("bi_r_version\t %s\n", bip->bi_r_version); + printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize, + bip->bi_memsize / (1024 * 1000)); + for (i = 0; i < EMAC_NUMS; i++) { + printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", i, + bip->bi_enetaddr[i][0], bip->bi_enetaddr[i][1], + bip->bi_enetaddr[i][2], bip->bi_enetaddr[i][3], + bip->bi_enetaddr[i][4], bip->bi_enetaddr[i][5]); + } + printk("bi_pci_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0, + bip->bi_pci_enetaddr[0], bip->bi_pci_enetaddr[1], + bip->bi_pci_enetaddr[2], bip->bi_pci_enetaddr[3], + bip->bi_pci_enetaddr[4], bip->bi_pci_enetaddr[5]); + + printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n", + bip->bi_intfreq, bip->bi_intfreq / 1000000); + + printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n", + bip->bi_busfreq, bip->bi_busfreq / 1000000); + printk("bi_pci_busfreq\t 0x%8.8x\t pci bus clock:\t %dMHz\n", + bip->bi_pci_busfreq, bip->bi_pci_busfreq / 1000000); + + printk("\n"); +#endif + /* RTC step for ash */ + ash_rtc_base = (void *) ASH_RTC_VADDR; + TODC_INIT(TODC_TYPE_DS1743, ash_rtc_base, ash_rtc_base, ash_rtc_base, + 8); +} + +void __init +bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip) +{ + /* + * Expected PCI mapping: + * + * PLB addr PCI memory addr + * --------------------- --------------------- + * 0000'0000 - 7fff'ffff <--- 0000'0000 - 7fff'ffff + * 8000'0000 - Bfff'ffff ---> 8000'0000 - Bfff'ffff + * + * PLB addr PCI io addr + * --------------------- --------------------- + * e800'0000 - e800'ffff ---> 0000'0000 - 0001'0000 + * + * The following code is simplified by assuming that the bootrom + * has been well behaved in following this mapping. + */ + +#ifdef DEBUG + int i; + + printk("ioremap PCLIO_BASE = 0x%x\n", pcip); + printk("PCI bridge regs before fixup \n"); + for (i = 0; i <= 2; i++) { + printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); + printk(" pmm%dla\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); + printk(" pmm%dpcila\t0x%x\n", i, + in_le32(&(pcip->pmm[i].pcila))); + printk(" pmm%dpciha\t0x%x\n", i, + in_le32(&(pcip->pmm[i].pciha))); + } + printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); + printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); + printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); + printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); + for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) { + early_read_config_dword(hose, hose->first_busno, + PCI_FUNC(hose->first_busno), bar, + &bar_response); + DBG("BUS %d, device %d, Function %d bar 0x%8.8x is 0x%8.8x\n", + hose->first_busno, PCI_SLOT(hose->first_busno), + PCI_FUNC(hose->first_busno), bar, bar_response); + } + +#endif + if (ppc_md.progress) + ppc_md.progress("bios_fixup(): enter", 0x800); + + /* added for IBM boot rom version 1.15 bios bar changes -AK */ + + /* Disable region first */ + out_le32((void *) &(pcip->pmm[0].ma), 0x00000000); + /* PLB starting addr, PCI: 0x80000000 */ + out_le32((void *) &(pcip->pmm[0].la), 0x80000000); + /* PCI start addr, 0x80000000 */ + out_le32((void *) &(pcip->pmm[0].pcila), PPC405_PCI_MEM_BASE); + /* 512MB range of PLB to PCI */ + out_le32((void *) &(pcip->pmm[0].pciha), 0x00000000); + /* Enable no pre-fetch, enable region */ + out_le32((void *) &(pcip->pmm[0].ma), ((0xffffffff - + (PPC405_PCI_UPPER_MEM - + PPC405_PCI_MEM_BASE)) | 0x01)); + + /* Disable region one */ + out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); + out_le32((void *) &(pcip->pmm[1].la), 0x00000000); + out_le32((void *) &(pcip->pmm[1].pcila), 0x00000000); + out_le32((void *) &(pcip->pmm[1].pciha), 0x00000000); + out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); + + /* Disable region two */ + out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); + out_le32((void *) &(pcip->pmm[2].la), 0x00000000); + out_le32((void *) &(pcip->pmm[2].pcila), 0x00000000); + out_le32((void *) &(pcip->pmm[2].pciha), 0x00000000); + out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); + + /* Enable PTM1 and PTM2, mapped to PLB address 0. */ + + out_le32((void *) &(pcip->ptm1la), 0x00000000); + out_le32((void *) &(pcip->ptm1ms), 0x00000001); + out_le32((void *) &(pcip->ptm2la), 0x00000000); + out_le32((void *) &(pcip->ptm2ms), 0x00000001); + + /* Write zero to PTM1 BAR. */ + + early_write_config_dword(hose, hose->first_busno, + PCI_FUNC(hose->first_busno), + PCI_BASE_ADDRESS_1, + 0x00000000); + + /* Disable PTM2 (unused) */ + + out_le32((void *) &(pcip->ptm2la), 0x00000000); + out_le32((void *) &(pcip->ptm2ms), 0x00000000); + + /* end work arround */ + if (ppc_md.progress) + ppc_md.progress("bios_fixup(): done", 0x800); + +#ifdef DEBUG + printk("PCI bridge regs after fixup \n"); + for (i = 0; i <= 2; i++) { + printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); + printk(" pmm%dla\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); + printk(" pmm%dpcila\t0x%x\n", i, + in_le32(&(pcip->pmm[i].pcila))); + printk(" pmm%dpciha\t0x%x\n", i, + in_le32(&(pcip->pmm[i].pciha))); + } + printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); + printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); + printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); + printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); + + for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) { + early_read_config_dword(hose, hose->first_busno, + PCI_FUNC(hose->first_busno), bar, + &bar_response); + DBG("BUS %d, device %d, Function %d bar 0x%8.8x is 0x%8.8x\n", + hose->first_busno, PCI_SLOT(hose->first_busno), + PCI_FUNC(hose->first_busno), bar, bar_response); + } + + +#endif +} + +void __init +ash_map_io(void) +{ + ppc4xx_map_io(); + io_block_mapping(ASH_RTC_VADDR, ASH_RTC_PADDR, ASH_RTC_SIZE, _PAGE_IO); +} + +void __init +platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + ppc4xx_init(r3, r4, r5, r6, r7); + + ppc_md.setup_arch = ash_setup_arch; + ppc_md.setup_io_mappings = ash_map_io; + +#ifdef CONFIG_PPC_RTC + ppc_md.time_init = todc_time_init; + ppc_md.set_rtc_time = todc_set_rtc_time; + ppc_md.get_rtc_time = todc_get_rtc_time; + ppc_md.nvram_read_val = todc_direct_read_val; + ppc_md.nvram_write_val = todc_direct_write_val; +#endif +} |